using System.Speech.Synthesis;

namespace EC.AutoWeightServer.IfManager.Speech
{
	public class SpeakHelper
	{
		private static SpeechSynthesizer _curSpeech = new SpeechSynthesizer
		{
			Volume = 100,//音量 [0, 100]
			Rate = 0//语速 [-10, 10]
		};

		public SpeakHelper()
		{
		}

		#region Start & Stop Server

		public static void Open(int volume = 100, int rate = 0)
		{
			_curSpeech = new SpeechSynthesizer
			{
				Volume = volume,
				Rate = rate
			};
		}

		public static void Close()
		{
			if (!IsOpen())
				return;
			_curSpeech.Pause();
			_curSpeech.Dispose();
			_curSpeech = null;
		}

		public static bool IsOpen()
		{
			return _curSpeech != null;
		}

		/// <summary>
		/// 开启连接
		/// 音量 [0, 100]
		/// 语速 [-10, 10]
		/// </summary>
		/// <returns></returns>
		public static void ReOpen(int volume = 100, int rate = 0)
		{
			Close();
			Open(volume, rate);
		}

		public static bool CheckState(bool reOpen = false)
		{
			var state = IsOpen();
			if (!state && reOpen)
				ReOpen();
			return state;
		}

		public static void SelectVoice(VoiceGender gender, VoiceAge age)
		{
			if (!CheckState(true))
				return;
			_curSpeech.SelectVoiceByHints(gender, age);
		}

		#endregion Start & Stop Server

		#region Tool Methods

		/// <summary>
		/// </summary>
		public static void Speak(string text)
		{
			if (!CheckState(true))
				return;
			_curSpeech.Speak(text);
		}

		public static void SpeakAsync(string text, bool cancelAll = true)
		{
			if (!CheckState(true))
				return;
			if (cancelAll)
				_curSpeech.SpeakAsyncCancelAll();
			_curSpeech.SpeakAsync(text);
		}

		#endregion Tool Methods
	}
}